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A136186 Primes whose decimal and binary reversal are both prime. +0
2
3, 5, 7, 11, 13, 17, 31, 37, 71, 73, 97, 101, 107, 113, 131, 151, 167, 181, 199, 313, 337, 353, 359, 373, 383, 701, 709, 727, 739, 757, 797, 907, 937, 941, 953, 967, 1033, 1091, 1109, 1153, 1181, 1193, 1201, 1217, 1229, 1259, 1439, 1453, 1471, 1487, 1619, 1669 (list; graph; listen)
OFFSET

1,1

EXAMPLE

337 = 101010001 base 2, reverse the sequence of ones and zeros: 100010101 base 2 = 277. 337, 733, and 277 are all prime.

CROSSREFS

Cf. A007500, A074832.

Adjacent sequences: A136183 A136184 A136185 this_sequence A136187 A136188 A136189

Sequence in context: A106284 A126145 A092729 this_sequence A023210 A136187 A130122

KEYWORD

base,nonn

AUTHOR

Harry J. Smith (hjsmithh(AT)sbcglobal.net), Dec 19 2007

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.


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